/Engine/Source/Runtime/Slate/Public/Framework/Notifications/NotificationManager.h
Updates a progress notification.
NotificationHandle A handle that can be used to update the progress or cancel the notification
void UpdateProgressNotification ( [FProgressNotificationHandle](API\Runtime\Slate\Framework\Notifications\FProgressNotificationHandle) InHandle, int32 TotalWorkDone, int32 UpdatedTotalWorkToDo, [FText](API\Runtime\Core\Internationalization\FText) UpdatedDisplayText )